Orthogonal gas laser device

ABSTRACT

The present invention aims to downsize a configuration for achieving confidentiality of data on an air link of a mobile terminal and/or data for communication with a partner terminal. A mobile terminal  1  communicating with plural base stations  4  and  1004  for providing plural different mobile communication networks/services achieves confidentiality of data on plural air links among the plural base stations  4  and  1004  using a single encrypting/decrypting unit  3.

TECHNICAL FIELD

[0001] The present invention relates to mobile communication.

BACKGROUND ART

[0002] Related Art 1

[0003]FIG. 3 shows, for example, a mobile communication system of arelated art. The system shows a case in which plural different mobilecommunication networks/services are available to a single mobileterminal.

[0004] In FIG. 3, base stations 14 and 114 respectively providedifferent mobile communication networks/services.

[0005] The operation will be explained in the following.

[0006] In a mobile communication network/service A, data 200 is firstinput to a control/communication unit 12 of a mobile terminal 11, theinput data is encrypted by an encrypting/decrypting unit 13, and radiodata 201 is output from the control/communication unit 12. At the basestation 14 which receives the radio data 201, the radio data 201 isdecrypted by an encrypting/decrypting unit 113, and the original data200 is obtained. On the other hand, when the mobile terminal 11 receivesthe data 201 encrypted by the encrypting/decrypting unit 113 in the basestation 14, the data 201 is decrypted by the encrypting/decrypting unit13 through the control/communication unit 12, and the original data 200is obtained.

[0007] In another mobile communication network/service B, the data 200is first input to the control/communication 12 of the mobile terminal11, the data 200 is encrypted by an encrypting/decrypting unit 15, andradio data 1201 is output from the control/communication unit 12. Thebase station which receives the radio data 1201 decrypts the radio data1201 using an encrypting/decrypting unit 115, and the original data 200is obtained. Further, when the mobile terminal 11 receives the radiodata 1201 encrypted at the base station 114, the radio data 1201 isdecrypted by the encrypting/decrypting unit 15 through thecontrol/communication unit 12, and the original data 200 is obtained.

[0008] Related Art 2

[0009]FIG. 4 shows, for example, a mobile communication system ofanother related art. The system shows a case in which a single usualmobile communication network/service is used.

[0010] In FIG. 4, a base station 16 provides a partner terminal 17 witha mobile communication network/service through an air link.

[0011] The operation will be described in the following.

[0012] In a mobile communication network/service, the data 200 is firstinput to the control/communication unit 12 of the mobile terminal 11,and the data 200 is encrypted using a common key (hereinafter, referredto as common key A), which is shared between the mobile terminal 11 andthe partner terminal 17, by the encrypting/decrypting unit 13. Theencrypted result is processed by the control/communication unit 12, ifnecessary, the result is further encrypted using a common key(hereinafter, referred to as common key B), which is shared between themobile terminal 11 and the base station 14, by the encrypting/decryptingunit 15, and the radio data 201 is output from the control/communicationunit 12. At the base station 14 which receives the radio data 201, theradio data 201 is decrypted using the common key B by theencrypting/decrypting unit 115, and the decrypted data is sent to thebase station 16 of the partner terminal. At the base station 16, thedecrypted data is encrypted using a common key (hereinafter, referred toas common key C), which is shared between the partner terminal 17 andthe base station 16, by the encrypting/decrypting unit 116, and theradio data 202 is output. At the partner terminal 17 which receives theradio data 202, the radio data 202 is decrypted using the common key Cby the encrypting/decrypting unit 19 through the control/communicationunit 18. The decrypted result is processed by the control/communicationunit 18, if necessary, the result is further decrypted using the commonkey A by the encrypting/decrypting unit 20, and the original data 200 isobtained.

[0013] In the above mobile communication of the related arts, there is aproblem that plural kinds of encrypting/decrypting units are necessarywhen plural different mobile communication networks/services are madeavailable to a single mobile terminal and when a confidentiality of datais achieved not only on the air link among the plural base stations butalso data for communication with the partner terminal.

[0014] The present invention is provided to solve the above problems andaims to downsize the mobile terminal.

DISCLOSURE OF THE INVENTION

[0015] According to the present invention a mobile communication system,in which a mobile terminal communicating with plural base stations forproviding plural different mobile communication networks/servicesachieves confidentiality of data on plural air links among the pluralbase stations using a single encrypting/decrypting unit.

[0016] According to the present invention, a mobile communicationsystem, in which a mobile terminal achieves confidentiality of data forcommunication with a base station on an air link and with a partnerterminal connected via the air link using a single encrypting/decryptingunit.

[0017] According to the present invention, a mobile communicationsystem, in which a mobile terminal communicating with plural basestations for providing plural different mobile communicationnetworks/services achieves confidentiality of data on plural air linksamong the plural base stations and data for communication with a partnerterminal connected via the air link using a single encrypting/decryptingunit.

BRIEF EXPLANATION OF THE DRAWINGS

[0018]FIG. 1 is a block diagram showing the first embodiment of theinvention.

[0019]FIG. 2 is a block diagram showing the second embodiment of theinvention.

[0020]FIG. 3 is a block diagram showing an embodiment of a related art.

[0021]FIG. 4 is a block diagram showing an embodiment of another relatedart.

BEST MODE FOR CARRYING OUT THE INVENTION

[0022] Embodiment 1

[0023] In the first embodiment, a mobile communication system will beexplained in case of plural different mobile communicationnetworks/services, a single mobile terminal uses the sameencrypting/decrypting unit for achieving confidentiality of data onplural air links among base stations.

[0024]FIG. 1 shows a system configuration of the mobile communicationsystem according to this embodiment of the invention.

[0025] In the figure, a reference numeral 1 shows a mobile terminal, 2shows a control/communication unit, 3 shows an encrypting/decryptingunit performing processes for encryption/decryption, and 4 shows a basestation. 1004 shows another base station which provides another mobilecommunication network/service different from the one provided by thebase station 4. 103 show encryption/decryption units which are includedon the base stations 4 and 1004, respectively and are the same as theencrypting/decrypting unit 3.

[0026] Next, the operation will be explained.

[0027] In a mobile communication network/service A, data 100 is firstinput to the control/communication unit 2 of the mobile terminal 1, thedata 100 is encrypted by the encrypting/decrypting unit 3, and radiodata 101 is output from the control/communication unit 2. At the basestation 4 which receives the radio data 101, the radio data 101 isdecrypted by the encrypting/decrypting unit 103, and the original data100 is obtained. And when the mobile terminal 1 receives the radio data101 encrypted by the encrypting/decrypting unit 103 of the base station4, the radio data 101 is decrypted by the encryption/decrypting unit 3through the control/communication unit 2, and the original data 100 isobtained.

[0028] Further, in another mobile communication network/service B, themobile terminal 1 and the base station 1004 can send/receive radio data1101 in similar manner to the above case using the encrypting/decryptingunits 3 and 103 which are the same.

[0029] As discussed above, when plural different mobile communicationnetworks/services A and B are employed, the mobile terminal 1 and thebase stations 4 and 1004 (the base station can be single or plural)encrypts/decrypts each data on the air links using the sameencrypting/decrypting units 3. Accordingly, there is no need to includeplural kinds of encrypting/decrypting units, so that the mobile terminalcan be downsized.

[0030] In the above case, the control/communication unit 2 and theencrypting/decrypting unit 3 can be configured as one unit. Further, asdescribed above, the encrypting/decrypting units 3 and 103 can be thesame.

[0031] Embodiment 2

[0032] In the above explanation of the first embodiment, a single mobileterminal achieve confidentiality of the data on plural air links amongthe base stations using the same encrypting/decrypting units in case ofplural different mobile communication networks/services employed. Next,another embodiment will be explained, in which the mobile terminalachieves confidentiality of the data for communication with the basestation and with a partner terminal using the same encrypting/decryptingunit, respectively, in case of a single mobile communicationnetwork/service employed.

[0033]FIG. 2 shows a configuration of the mobile communication systemaccording to another embodiment of the invention for the above case.

[0034] In the figure, a reference numeral 1 shows a mobile terminal, 2and 7 show control/communication units, 3 and 8 showencrypting/decrypting units performing processes for the sameencryption/decryption, 4 and 5 show base stations, 6 shows a partnerterminal, 104 and 105 show encrypting/decrypting units performingprocesses for encryption/decryption at the base stations 4 and 5.

[0035] Next, the operation will be described.

[0036] In a mobile communication network/service, data 100 is firstinput to the control/communication unit 2 of the mobile terminal 1, andthe data 100 is encrypted using a common key (hereinafter, referred toas common key A), which is shared between the mobile terminal 1 and thepartner terminal 6, by the encrypting/decrypting unit 3. The encryptedresult is processed by the control/communication unit 2, if necessary,the result is further encrypted using a common key (hereinafter,referred to as common key B), which is shared between the mobileterminal 1 and the base station 4, by the encrypting/decrypting unit 3again, and radio data 101 is output from the control/communication unit2. At the base station 4 which receives the radio data 101, the radiodata 101 is decrypted using the common key B by theencrypting/decrypting unit 104, and the decrypted data is sent to thebase station 5 of the partner terminal. At the base station 5, thedecrypted data is encrypted using a common key (hereinafter, referred toas common key C), which is shared between the partner terminal 6 and thebase station 5, by the encrypting/decrypting unit 105, and the radiodata 102 is output. At the partner terminal 6 which receives the radiodata 102, the radio data 102 is decrypted using the common key C by theencrypting/decrypting unit 8 through the control/communication unit 7.The decrypted result is processed by the control/communication unit 7,if necessary, the result is further decrypted using the common key A bythe encrypting/decrypting unit 8, and the original data 100 is obtained.

[0037] Further, the same operation can be done in case of datacommunication from the partner terminal 6 to the mobile terminal 1.

[0038] In the above case, the control/communication unit 2 and theencrypting/decrypting unit 3, and the control/communication unit 7 andthe encrypting/decrypting unit 8 can be configured as one units,respectively. And the encrypting/decrypting units 3, 8, 104, and 105 canbe the same.

[0039] Embodiment 3

[0040] In the foregoing embodiments, the case of plural different mobilecommunication networks/services and the case of a single mobilecommunication network/service have been discussed separately. Thepresent invention can be applied to another case in which the above twocases are combined.

[0041] Industrial Applicability

[0042] As described above, the same encrypting/decrypting unit is usedfor achieving confidentiality of data for communication of a singlemobile terminal connected to plural different mobile communicationnetworks/services with plural base stations, which enables to downsizethe terminal.

[0043] Further, the same encrypting/decrypting unit is used forachieving confidentiality of data for communication of a single mobileterminal connected to a single mobile communication network/service witha base station and with a partner terminal, which enables to downsizethe terminal.

[0044] Yet further, the same encrypting/decrypting unit is used forachieving confidentiality of data for communication with plural basestations and with a partner terminal, which enables to downsize theterminal.

1. A mobile communication system, in which a mobile terminalcommunicating with plural base stations for providing plural differentmobile communication networks/services achieves confidentiality of dataon plural air links among the plural base stations using a singleencrypting/decrypting unit.
 2. A mobile communication system, in which amobile terminal achieves confidentiality of data for communication witha base station on an air link and with a partner terminal connected viathe air link using a single encrypting/decrypting unit.
 3. A mobilecommunication system, in which a mobile terminal communicating withplural base stations for providing plural different mobile communicationnetworks/services achieves confidentiality of data on plural air linksamong the plural base stations and data for communication with a partnerterminal connected via the air link using a single encrypting/decryptingunit.